Looks like a Bear rub, claw, and maybe chew. I assume your in Grizz country with the Large caliber handgun at your side. A Moose scrape would have more antler mark grooves. It also kinda low on the tree for a moose scrape.
its an elk rub. no grizzly in the part of oregon I hunt, but lots of mountain lion.I was scouting with a friend 2 weeks prior to the elk season when I found this rub. I've found hundreds of rubs, but this is the only one ive ever took a picture of just because of the damage to a tree this size and the height of it. the rifle was my partners who snapped the photo and i was just packing the .357 revolver.
here is a photo from the same area,taken the day before the season started. I always carry a pack of fish hooks and leader. I saw these little brook trout swimming near the shore, so I tied it on to a stick and dug a beetle out of a log and managed to catch one:
68valu